Additional Cardiac Calculations
LOGIQ 500 Basic Users Manual
2233658–100 Rev. 0
10–20
Examples
When a volume calculation is desired, do one of the following:
S
Make 1 distance measurement.
S
Make 2 distance measurements.
S
Make 1 ellipse measurement.
S
Make 3 distance measurements.
NOTE: Three distances should be done in the dual format
mode (side by side images). One measurement is usually
made in the sagittal plane and 2 measurements in the axial
plane.
S
Make 1 distance and 1 ellipse measurement.
S
Make 2 ellipse measurements.
Formulas used are found in the table on
10–21.
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Volumes are most accurate when measurements are taken
in the sagittal and axial scan planes.
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Use the side by side dual format option to display sagittal
and axial plane images simultaneously.
S
Make all necessary measurements before selecting
volume.
S
General Measurements and Calculations for details on
the steps to take when doing basic distance and area
measurements.
S
An overflow error message (OOR) will occur during a 2
ellipse, or 1 ellipse/1 distance volume calculation if: the
minor (small) axis of the large ellipse is equal to/less than
the major (large) axis of the small ellipse (d1), or equal
to/less than the single distance measurement (d2).
d1
d2
Figure 10–22. Volume Calculation Error Possibilities
.
Hints
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